I bought an aranet4 last week and the most useful part to me so far isn't really the CO₂ sensor but the temperature one, showing 0.1ºC precision. And the big take away from this weekend is that the consoles produce much heat. I kinda expected that from the PS5 but the switch 1 is also an issue, or it's the 21" screen which is at least 10 years old. I did fallback today on 3DS pokemon alpha sapphire